Notebook spine window



FIG. 1 is a side, top, perspective view of the notebook spine window, with elements thereof shown in phantom;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a front view thereof with the notebook in an open position;

FIG. 9 is a close up rear view thereof; and,

FIG. 10 is a close up front view thereof.

The portions of the notebook spine window shown in broken lines illustrate portions of the notebook spine window that form no part of the claimed design. The broken line showing of the notebook illustrates the environment of the claimed design and forms no part thereof. 

CLAIM The ornamental design for notebook spine window, as shown and described. 